#include<stdio.h>
void main()
{
	char ch[10]="1ab2cde3",*p=ch;
	while(*p)
	{
		if(*p>='a' && *p<='z')
		{
			if(p==ch) *p-=32;
			else if(p!=ch && *(p-1)!='\0') *p-=32;
			else if(*(p-1)=='\0') break;
		}
		p+=2;
	}
	puts(ch);//1aB2CdE3
}

